wxHaskell 失败，因为它依赖于 wx_macu-2.8

Question

我用 macports 安装 wxWidgets 然后运行命令：sudo cabal install wx 其中输出包括：

/bin/sh: wxdirect: command not found
/bin/sh: wxdirect: command not found
/bin/sh: wxdirect: command not found
/bin/sh: wxdirect: command not found
Configuring wxcore-0.12.1.6...
setup: Missing dependency on a foreign library:
* Missing C library: wx_macu-2.8
This problem can usually be solved by installing the system package that
provides this library (you may need the "-dev" version). If the library is
already installed but in a non-standard location then you can use the flags
--extra-include-dirs= and --extra-lib-dirs= to specify where it is.
cabal: Error: some packages failed to install:
wx-0.12.1.6 depends on wxcore-0.12.1.6 which failed to install.
wxcore-0.12.1.6 failed during the configure step. The exception was:
ExitFailure 1

我在使用这个命令时遇到了同样的错误：sudo cabal install wx --extra-include-dirs=/opt/local --extra-lib-dirs=/opt/local。如何安装 wx_macu-2.8，或者做我需要做的来解决这个问题？

Answer 1

这是说您缺少 C 库，而不是 Haskell 库。 Cabal 无法安装任意 C 库。

检查您的发行版的包管理器，确保您拥有与 wxWidgets-2.8 相关的所有内容，包括任何开发者包。